【摘要】 采用二价钴盐为前驱物,1,2-丙二醇为还原剂,用液相还原法制备了晶粒尺寸约为10~13nm、具有面心立方(β相)结构的纯度高、粒度均匀的纳米钴粉,运用XRD、TEM等分析方法对制备的纳米钴粉进行物相和结构形貌的表征,初步研究了多元醇法还原Co纳米粉的反应机理。采用VSM对纳米钴粉进行磁学性能的表征。结果表明,所制备的纳米Co粉在室温下具有铁磁性,并且矫顽力不高(6.282×103A/m)。更多还原

【Abstract】 By the polyol reduction process, the nanometer spherical cobalt particles with fcc structure and a crystal size of 10～13nm,are prepared using the reagents of cobaltous salt as precursor and 1,2-propanediol as reducing agent.XRD,TEM are applied to characterize the phase and morphology of the as-prepared products.The magnetic characterizations of the nanometerβ-Co particles are studied by VSM.They are ferromagnetic at room temperature but with small coercivity(6.282×10~3A/m).更多还原